 |
| A big box.
|
 |
 |
| Handrails and
ladder are plastic. |
 |
| Texture on the
walking surfaces is extremely fine. |
 |
| Counterweights
are not separate.
|
 |
| Good detail on
the track frames.
|
 |
| Small graphics
are very good.
|
 |
| Chains are a
bit too silver. |
 |
| Brass pulleys
would have been better coloured. |
 |
| Plastic cab. |
 |
| Grab is quite
nice. |
|
The Sennebogen 690 HD is a heavy duty
cycle machine designed for repetitive stressful
loadings. It has a 90 tonne capacity and a maximum
main boom length of 57.9m.
This model comes with a diaphragm wall grab used for
excavating underground wall panels for basement
structures.
Packaging
It comes in a rather large branded box because the model
is fully assembled and reeved. Releasing the 690 HD
from the packaging is a struggle as it is secured to the
polystyrene trays with numerous tightly wound ties. The review model had no defects
or missing parts.
A few technical details of the real machine are included
on the box and an instruction sheet with photos
describes the main features of the model.
Detail
The metal tracks are good with snap-fit links which were
tight enough on the review model. They are mounted
on decent track frames with no moving rollers but there
are small graphics and steps.
The cab is plastic with a mirror and slightly fat grab
rails. There is plastic step plate outside and the
internal detail is good. The body has a very good
paint finish with small graphics that look realistic.
Flexible plastic handrails surround the roof and the
walking areas have an extremely fine textured surface.
At the rear the counterweights are detailed with sharp
graphics applied. The chains are a little too
bright in terms of their silvered finish and the
pulleys for the boom luffing gear are separate brass
pieces.
The boom is metal with a plastic walkway inside the top
surface, and its structure is a reasonable
representation but the riveted connections at the top of
the boom foot do not look right. The boom pendants
are an unusual pliable plastic and they are fixed in
length.
At the boom head the large pulleys look fine but the
smaller brass ones would have been better painted to
match the rest of the crane.
The diaphragm walling equipment is a combination of
metal and plastic. The grab is all metal while
much of the frame work is plastic. However the
overall look is good with only the silver rivets and
brass pulleys looking a little off.
Features
The tracks roll reasonably and the idlers on the frames
are spring loaded so removing the tracks is possible.
The track frames are also retractable, so they could be
set up in a narrow transport configuration.
The crane rotates well.
To gain access to the winches the whole of one side
panel is removable and this is certainly a better
solution than just having holes in the bodywork.
Inside the panel there are a couple of large keys and
these can be used to operate any of the three working
winches.
The boom luffing winch can be used to adjust the boom
angle although the boom cannot be fully raised near
vertical as the boom pendants are probably over
length.
There is no ability to reconfigure the boom as it is
permanently riveted in the delivered configuration.
Similarly the counterweight is fixed in place and not
made of individually separable parts although some
pieces can be unscrewed. However the
counterweight lift cylinders can be raised and lowered a
little.
The grab can be raised and lowered and opened and closed
using the two main winches, and they both have a push
mechanism to release the brake. One practical
difficulty is that the whole grab assembly starts
spinning if it is raised off the ground.
Quality
There is some plastic on the model and on the whole it
blends in with the metal parts well. The paintwork
is very good and a good job has been done to apply a
number of small graphics around the model.
Price
The model is reasonably priced overall.
Overall
ROS has produced a model which can be taken out of the
model and displayed with no assembly work. However
the compromise is that the model is not flexible as it
cannot be broken down for transport loads or used in
crane or other configurations. In that sense an
opportunity has been missed. But it is good that
another foundation equipment model has been made and
overall it looks good with some nice detailing, and is
recommended.
Footnotes
The model appeared in December 2011. A version
with a dragline was
also produced.
|
|
|
|
 |
| Model is
fully erected in the box. |
 |
| Profile view. |
 |
| Smart
decoration. |
 |
| Boom pendants
are plastic. |
 |
| Tracks are
retractable, but the model cannot be stripped down for
transport. |
 |
| "Anyone seen
the keys?".
|
 |
| Overall look is
good. |
 |
| Three winch
drums. |
 |
| Rivets are a
little obvious. |
 |
| Plastic
walkways inside the boom. |
|
